I was an agnostic, but now, by page 104 of your book, I'm there, an atheist. It didn't take more than a bit of reasoned argument to convert me. Perhaps a theist will be able to convert me back with an equally well reasoned argument, however, I doubt it will consist of anything more than saying "God Loves you no matter what you believe ". Well that's nice of him, I might as well not bother then.
Whatever you do, don't; write a book entitled The Father Christmas Delusion. I couldn't bear that.